汽车塑料件油漆起泡的原因及控制方法 关键词】半透膜；渗透压；多孔性基材；闪干 [gap=1154]Key words】semi permeable membrane；permeation pressure；porous substrate；flash drying
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The relationship between the mixed liquor suspended solid concentration, chemical oxygen demand and wastewater permeation pressure of the membrane was studied.
考察了废水中悬浮物浓度及化学需氧量与炭膜渗透压的关系。
The phase lag produced by the response of the well water level to variation of air pressure results from permeation of water between the well and aquifer.
由于水在井孔与含水层之间的渗流造成了井水位对空气压力变化的响应产生位相滞后。
Therefore, lowered pressure should not be used in the exploitation of low permeation oil reservoirs.
因此在低渗透油气藏的开采中，不宜采用降压开采。
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